Update maintainers for fabric-samples

Previously fabric-samples utilized the fabric list of maintainers. Over time
other contributors have become active. The fabric maintainers will use this
CR to vote for a new set of fabric-samples mainatiners, with the initial list
based on developers with the most contributions and reviews for fabric-samples
over the last 12 months.

Additionally, change fabric-samples from a two +2 policy to a
non-author code review policy.

Change-Id: I9c479f2e8a3dd7389e6e317aa4430cba1df9f3b3
Signed-off-by: David Enyeart <enyeart@us.ibm.com>

MAINTAINERS.md

@@ -1,5 +1,19 @@
-## Hyperledger Fabric Maintainers
+Maintainers
+===========
+
+fabric-samples uses a non-author code review policy, requiring a single +2 from a non-author maintainer.
+
+| Name                      | Gerrit              | GitHub           | Chat           | email                               |
+|---------------------------|---------------------|------------------|----------------|-------------------------------------|
+| Arnaud Le Hors            | lehors              | lehors           | lehors         | lehors@us.ibm.com                   |
+| Bret Harrison             | harrisob@us.ibm.com | harrisob         | bretharrison   | harrisob@us.ibm.com                |
+| Chris Ferris              | ChristopherFerris   | christo4ferris   | cbf            | chris.ferris@gmail.com              |
+| Dave Enyeart              | denyeart            | denyeart         | dave.enyeart   | enyeart@us.ibm.com                  |
+| Gari Singh                | mastersingh24       | mastersingh24    | garisingh      | gari.r.singh@gmail.com              |
+| Jason Yellick             | jyellick            | jyellick         | jyellick       | jyellick@us.ibm.com                 |
+| Matthew B White           | mbwhite             | mbwhite          | mbwhite        | whitemat@uk.ibm.com                 |
+| Simon Stone               | simonstone1         | sstone1          | sstone1        | sstone1@uk.ibm.com                  |
+
+Also: Please see the [Release Manager section](https://github.com/hyperledger/fabric/blob/master/docs/source/MAINTAINERS.rst)
 
-[MAINTAINERS](http://hyperledger-fabric.readthedocs.io/en/latest/MAINTAINERS.html)
-
-<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>
+<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 International License</a>.